ABSTRACT
La calcificación extraesquelética es una entidad patológica de depósito de sales minerales fuera de las estructuras óseas. Los casos frecuentes se presentan por obstrucción mecánica de la glándula salival o de su conducto excretor, asociada con la formación de sialolitos en el parénquima, su verdadera causa no se conoce con exactitud, pero hay distintas hipótesis con respecto a factores locales y sistémicos. La sialolitiasis es la afección más común de las glándulas salivales en adultos jóvenes, 12 de cada 1,000 pacientes sufren de esta patología, con un predominio del sexo masculino. El diagnóstico se puede establecer mediante ecografía, radiografías oclusales, panorámicas o tomografía cone beam. Estudiamos dos casos de calcificaciones de los tejidos glandulares. El primero de una formación mineral dentro de su conducto y el segundo de una calcificación completa del conducto salival (AU)
Extra bone calcification is a pathological entity of deposit of mineral salts outside bone structures. Frequent cases are due to mechanical obstruction of the salivary gland or its excretory duct, associated with the formation of sialoliths in the parenchyma, its true cause is unknown, but there are different hypotheses regarding the influence local and systemic factors. Sialolithiasis is the most common condition of the salivary glands in young adults, 12 out of 1,000 patients suffer from this pathology, with a predominance of males. Diagnosis can be established by ultrasound, occlusal radiographs, panoramic or cone beam tomography. We studied two cases of calcification of glandular tissues. The first is a mineral formation inside the duct and the second is a complete calcification of the salivary duct (AU)
Subject(s)
Humans , Male , Female , Middle Aged , Oral Surgical Procedures , Salivary Gland Calculi , Sialadenitis , Age and Sex Distribution , Diagnostic ImagingABSTRACT
Osteoblastomas are bone forming lesions arising mainly from posterior elements of the vertebra. They are commonly encountered in the cervical and lumbar regions. We present a case of a thoracic osteoblastoma which is extra osseous and is not communicating with any part of the vertebra present intraforaminally. This is a rare presentation of an osteoblastoma. Imaging studies do not accurately diagnose the osteiod lesion. The size of the lesion and cortical erosion seen on the computed tomography scan help in differentiating the osteoid osteoma and osteoblastoma, but they are less sensitive and specific. Thus a histopathology is the investigation of choice to diagnose the osteoblastoma. Early and adequate removal of mass prevents malignant transformation, metastasis, and recurrence. In our case we excised the pars interarticularis unilaterally, removed the osteoid mass intact, and performed unilateral instrumented fusion. There was no recurrence and solid fusion was seen at 3 years follow up.
Subject(s)
Follow-Up Studies , Lumbosacral Region , Neoplasm Metastasis , Osteoblastoma , Osteoma, Osteoid , Recurrence , SpineABSTRACT
El sarcoma de Ewing o también llamado tumor neuroectodérmico primitivo es una entidad muy rara, cuyo diagnóstico se realiza con la utilización de estudios de inmunohistoquímica, su comportamiento es muy agresivo con una supervivencia limitada. Se presenta el caso de un paciente masculino de 18 años de edad que consultó por presentar un tumor renal, se le realizó nefrectomía radical con diagnóstico definitivo de sarcoma de Ewing extra esquelético. Esta es una patología quirúrgica poco frecuente, lo que nos motivó a su presentación y a la revisión de la literatura.
The Ewing sarcoma is also denominated primitive neuroectodermic tumor and is considered how a rare entity, the diagnostic is realize with the utilization of immunohistochemestry studys, his clinical curse is very aggressive with a limite superlife. We presented and study a clinical case of a sex male patient of 18 years old which consult us for present a renal tumor. He underwent a radical nefrectomy with a definitive diagnostic of extra osseous Ewing sarcoma. This is a less frequent surgical pathology, we motive us to present and review the literature.
Subject(s)
Humans , Male , Adult , Immunohistochemistry/methods , Nephrectomy/methods , Kidney Neoplasms/surgery , Kidney Neoplasms/pathology , Neuroectodermal Tumors, Primitive/pathology , Medical Oncology , Sarcoma, Ewing/pathologyABSTRACT
Recently, the authors have experienced a case of intracranial meningeal mesenchymal chondrosarcoma. Mesenchymal chondrosarcoma is a rare tumor of the bone and soft tissue. It has been reported that the most common site of their extra-osseous origin is the central nervous system. Precise differential diagnosis should be done because of 1) its similarity to angioblastic meningioma or hemangiopericytoma in pathological aspect, 2) much more malignant tendency. We present one case of intracranial meningeal mesechymal chondrosarcoma with a brief review of the relevant literature.